Foueths to james w



(No Model.) l y K. HYDE.

WOOD RIM PULLEY.

lPatented Deo. 9, 1884..

M, M W. M

KIRKLEY HYDE, OF' LOWELL, MASSACHUSETTS, ASSIGN OR DE THREE- FOURTHS TOJAMES W. BENNETT, ALBERT M. MOORE, ANlD FREDER- IGK TAYLOR, ALL OF SAMEPLACE.

WOOD-RIM PULLEY.

SPECIFICATION forming part of Letters Patent No. 309.145I dated December9, 1884.

Application filed May 12, 1884. (No model.)

To all whom it may concern.-

Be it known that I, KIRKLEY HYDE,a citizen of the United States,residing at Lowell, in the county of Middlesex and Commonwealth 5 ofMassachusetts, have invented certain new and useful Improvements inWood-Rim Pulleys, of which the following is aspecilication.

My invention relates to wood-rim pulleys; and it consists in thecombinations hereinafter 1o described and claimed.

In the accompanying drawings, Figure 1 is a side elevation of a pulleyconstructed according to my invention, a part of the outer felliesthereof being broken away to show the I5 outer end of one of the arms,the screw, the

wedges, and nuts, and the ends of the foundation-fellies; Fig. 2, anenlarged side elevation of the outer portion of one of the spider-armsand the adjacent foundation-fellies, the outer 2o end of the arm, thenut,checknut,and wedges being in central section on a planeperpendicular to the'aXis of the pulley. 1

A is a metallic spider, consisting of a hub,a, and arms of', preferablyof cast metal, of any 2 5 usual construction except as to the outer endsof the arms, each of which is provided with a radial screw, B,cast orotherwise secured from turning in the outer ends of the arms a.

On cach screw B, beyond the arm, are, in

3o the order named below, a check-nut, b', an-

other nut, b, both turning on said screw B, a truncated wedge, O,provided with a central opening, c, large enough to allow the screw topass freely through it, and another truncated 3, 5 wedge, D, having athreaded central opening which engages with said screw B. The base ofthe outer Wedge is nearest the face of the pulley. The base of the innerwedge is nearest the end of the arm, the base of thelast-named wedgebeing an imaginary plane at right an- 4o gles to the screw at the widestpart of said wedge, the material added to the wedge between its base andthe end of the arm being for strength merely, and being added becausethe thinner or outer end of lthe truncated wedge is hollowed out toreceive the thin end of the wedge. The ends of the middle or foundationfellies are each cut to fit over the outer wedge and between theinclined faces of the wedges. The fellies F are placed in position whenthe nuts are loosened or turned toward the ends ofthe arms, and theinner wedge is then forced outward by turning the nut against it,thereby causing the end ot' the felly to be pinched between thewedges,and,owing to the 55 inclination of the contiguous surfaces of thefelly and wedges, causing the felly to be crowded endwise toward the armnext adjacent and preventing any endwise or other motion. It will beunderstood that all the foundation fellies are put in place before anyof the nuts are turned up. To the foundation fellies are attached theouter fellies by screws, or nails, or brads, and glue, and the rim isnally turned true in the usual manner. l 65 I cla-im as my invention-The combination of the metallic spider having arms, each provided with aradial screw, the outer wedges having internal screw-threads to engagewith said screws, the inner wedges having openings to receive saidscrews, and the nuts, and the foundation fellies having wedge-shapedends, as and for the purpose specified.

\ KIRKLEY HYDE.

VVituesses:

ALBERT M. Moolen, ED XV. THoMrsoN.

